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If |(z-z1)/(z-z2)|=3,w h e r ez1a n dz2 ...

If `|(z-z_1)/(z-z_2)|=3,w h e r ez_1a n dz_2` are fixed complex numbers and `z` is a variable complex number, then `z` lies on a (a).circle with `z_1` as its interior point (b).circle with `z_2` as its interior point (c).circle with `z_1` as its exterior point (d).circle with `z_2` as its exterior point

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